The author of this paper has developed a controlled circuit of the pulse neutron generator 必須對(duì)脈沖中子發(fā)生器原來(lái)的控制電路重新研制。本論文對(duì)脈沖中子發(fā)生器控制電路進(jìn)行了研究。
The study on fast neutron physics and relative technique of experiment and data analysis made at a pulsed neutron generator in beijing normal university during recent yeras is introduced 摘要綜述近年來(lái)在北師大低能所的國(guó)內(nèi)第一臺(tái)脈沖化高壓倍加器上開展的快中子物理,及有關(guān)的實(shí)驗(yàn)和數(shù)據(jù)處理技術(shù)研究。
Utilizing the pulse neutron generator working with controlled circuit and time amplitude converter , the ash content in coal is measured , and we provides a safe and on line methods 通過(guò)該思路,利用脈沖中子發(fā)生器,控制電路,多道脈沖幅度分析器對(duì)煤中灰份的含量進(jìn)行了測(cè)量,提出了一種實(shí)時(shí)、安全的快速檢測(cè)方法。
The pulse neutron generator " s delaying time are measured by the time - amplitude converter and multichannel pulse amplitude analyzer . according to these times , the linear gate circuit " s opening time can be adjusted 用它和多道脈沖幅度分析器配合測(cè)量脈沖中子發(fā)生器發(fā)射中子的滯后時(shí)間,據(jù)此調(diào)整線性門電路的開門時(shí)間。
The pulse neutron generator can be used to analyze the elements in substance , because it can produce pulse neutrons which have the characteristics such as high energy , monohcrome , safe using and controlled easily 脈沖中子發(fā)生器具有產(chǎn)生的中子能量高、單色性好,可控、使用安全,可產(chǎn)生脈沖中子的特性,可用來(lái)對(duì)物質(zhì)進(jìn)行元素分析。
Using it , time amplitude converter and pulse neutron generator , the y spectra of 14mev pulse neutrons is measured . utilizing the time difference of several different reactions about the interaction of neutrons and nucleus , the whole spectra and the capture spectra are measured . a method that uses double gate subtracting background to gain the fast neutrons " inelastic scattering y spectra is introduced 研制了一種線性門電路,介紹了它與脈沖中子發(fā)生器、多道脈沖幅度分析器配合,進(jìn)行14mev脈沖中子譜的測(cè)量,利用中子和原子核相互作用的幾種反應(yīng)在時(shí)間上的差異,測(cè)量了總譜和俘獲譜,采用雙門減本底方法得到了快中子非彈性散射譜。
But if we want to make it work normaly and make it work with electronic development to distinguish the neutron ' s inelastic scattering y spectra with the capture spectra , then we can get the element ' s inelastic scattering y spectra , we must research again the controlled circuit of the pulse neutron generator 而要使脈沖中子發(fā)生器正常工作并且能于我們自己研制的電控門配合,將中子與物質(zhì)中所含元素的原子核相互作用的非彈性散射反應(yīng)和俘獲反應(yīng)區(qū)分丌來(lái),從而得到能夠較好的表征該元素的非彈性散射譜。